Growing community of inventors

San Diego, CA, United States of America

Derek J Stone

Average Co-Inventor Count = 4.00

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 18

Derek J StoneKarl B Offerman (1 patent)Derek J StoneJack Peter (1 patent)Derek J StoneLarry D Brown (1 patent)Derek J StoneDerek J Stone (1 patent)Karl B OffermanKarl B Offerman (6 patents)Jack PeterJack Peter (1 patent)Larry D BrownLarry D Brown (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Cipher Data Products, Inc. (1 from 19 patents)


1 patent:

1. 4243186 - Low profile magnetic tape drive with vacuum actuated auto-threading

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12/12/2025
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